Dissection of the Multichannel Reaction O((3)P) + C(2)H(2): Differential Cross-Sections and Product Energy Distributions.

Dissection of the Multichannel Reaction O((3)P) + C(2)H(2): Differential Cross-Sections and Product Energy Distributions.
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多通道反应 O(3P) C2H2 剖析:微分截面和产物能量分布

DOI:
10.3390/molecules27030754
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发表时间:
2022-01-24
期刊:
Molecules (Basel, Switzerland)
影响因子:
--
通讯作者:
Xie D
Xie D
中科院分区:
其他
文献类型:
--
作者:
Zhang S;Chen Q;Zuo J;Hu X;Xie D

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O(3P)+ C2H2反应在烃类燃烧中起着重要作用。它有两个主要的竞争通道:H + HCCO(烯酮基)和CO + CH 2(三重亚甲基)。为了进一步理解该反应的微观动力学机制,我们在最近发展的全维势能面(PES)上对O(3P)+ C2H2反应进行了详细的准经典轨道研究.入口势垒TS 1是反应中的限速势垒。反应物的平移可以极大地促进反应性,这是由于与TS 1处的反应坐标的强耦合。O(3P)+ C2H2反应通过络合物形成机制进行,其中中间体HCHO至少存在于旋转周期的持续时间内。能量重新分配发生在长寿命的高振动(和旋转)激发的HCHO在反应中的创建。两个通道的产物能量分配和CO的振动态分布与实验数据一致,所有模式的产物的振动态分布均呈现类Boltzmann分布。
The O(3P) + C2H2 reaction plays an important role in hydrocarbon combustion. It has two primary competing channels: H + HCCO (ketenyl) and CO + CH2 (triplet methylene). To further understand the microscopic dynamic mechanism of this reaction, we report here a detailed quasi-classical trajectory study of the O(3P) + C2H2 reaction on the recently developed full-dimensional potential energy surface (PES). The entrance barrier TS1 is the rate-limiting barrier in the reaction. The translation of reactants can greatly promote reactivity, due to strong coupling with the reaction coordinate at TS1. The O(3P) + C2H2 reaction progress through a complex-forming mechanism, in which the intermediate HCCHO lives at least through the duration of a rotational period. The energy redistribution takes place during the creation of the long-lived high vibrationally (and rotationally) excited HCCHO in the reaction. The product energy partitioning of the two channels and CO vibrational distributions agree with experimental data, and the vibrational state distributions of all modes of products present a Boltzmann-like distribution.
DOI: 10.1063/1.470853
发表时间: 1996-01-08
影响因子: 4.4
作者:
Guo, Y;Thompson, DL;Sewell, TD
通讯作者: Sewell, TD
DOI: 10.1021/j100203a043
发表时间: 1992-11-26
影响因子: --
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通讯作者: PEETERS, J
DOI: 10.1021/jz400568t
发表时间: 2013-04-18
影响因子: 5.7
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DOI: 10.1039/f29827801231
发表时间: 1982-01-01
期刊: JOURNAL OF THE CHEMICAL SOCIETY-FARADAY TRANSACTIONS II
影响因子: --
作者:
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